Catalogo Illustrato delle Piante di Roma Online. The online catalogue of the historical maps of Rome has been in development since 2004. Many of the maps can be studied as a digital facsimile. The database system used is Filemaker. The complete database is deposited in ZUCCARO.

Vedute di Roma Online. A portal providing access to a collection of prints and drawings of buildings in Rome from the holdings of the Bibliotheca Hertziana (opened 2011). Images and data are also incorporated in ZUCCARO.

Schedarium of the artists in Rome. Among the Bibliotheca Hertziana’s holdings of archival material are the notes on foreign artists working in Rome compiled by the German cultural historian Friedrich Noack (1858–1930). Largely written in an antiquated shorthand, the card index consists of 18,000 slips of paper. It was digitised in 2006 and indexed by artists’ names. The data are stored in an eXist database; the scans are accessible online.